Automatic bleeding mechanism for air lines of train air-brake mechanism



. W. F. DISHON AUTOMATIC BLEEDING MECHANISM FOR AIR LINES OF TRAIN AIR BRAKE MECHANISM Get. 16, 1928.

Filed May 2, 1927 Inventor 7W1 ,DASWarz;

the system, as long as the treckway.

' the i invention.

Patented Qct. 161928.

UNITED I T S" PATEN oFFioE;

WILLYE F. msnon, or entrust, nnrucK'YL AUTOMATIC BLEEDING MECHANISM FOR AIR LINES F RAIN AIR-BRAKE I MECHANISM. f

Application fiiee'ivia 'z; 1927 Serial No 188,215.

This invent'on relates to new and useful improvements inantoinatic a r brakrng systems to? trains and more particulerret ercnce to a trainline bleeding device oper-' able automatically by a car jumping its rails for braking the train and materially lessening the liability of one or all of the cars from turning over. I r j I In carrying out my inven ion, there 1s pro vided' means normally located slightly'above one of the track rails and operable to open a valvein the train line forcausing the bleed ing or the air from the auxiliary reservoir toot' l0 tor a purpose hereinafter more fully which will automatically apply the brakes.

T he primary object of this invention to f provide a device of this'character that may be associated with air brake terns without in any manner changing the onstruction ot the system or alteccing the pi oer operation A further and important object is to proovidesuch a device that may be readily and without great; ei-ipenditure installed in all the same up for any ccnsidereble lengthof time. i I v,

lVith the foregoing and, other ob ects in view. it i s obvious that other advantages of ention will become more 'readily'appar cit "from the following description when the drawings.-

telren in connection wit In the accompa drawing forming part of this applies-1on2 c Figure 1 is a fragmentary side elevutio of a car on a tra'olzwayequipped with an air brake mechanism and further equipped with an automatic lead device for the trainline accordance with thc prese'nt constructed in Figure Q'is elevation otthe device longitudinal section ubstantially' on l ne 3+3 l k, is an enlargedfraginentary longitudinal section taken substantially from the line 4l of Fig. 2, more clearly disclosing the valve unit of the device. ,7 "low having particular reference vice consists of a plunger housing 5 constructed from a pair of sections 66 arthe cars remain on,

types o' cars new in use equipped fi l to the, drawing, my novel train l ne bleeding derange; in abutting relation and being tightly joined by 'a plurality of bolt and nut connections 7 arranged. in spaced relation throughout the length thereof. The opposed.

' feces of these. sections 6 67- adjacent the outer edge thereof, are channeled-jto"provide n plunger bore 8 extending throughout the ent re length thereof.

described; p

One section 6 of the housing 5 is formed at one end wtha right angular extension to provide a bracket 11 which bracket cooper.-

ates with the adjacent section 6 of the housing to facilitate the attachment ofthe same in a rigid manner to the wheel truck of a car A-by an L-shaped bracket 12, see Fig. 1. lVhen attached in the manner as indicated in 'Fig; 1, the lower end of the housing 5 is considerably abovethe'rail B wh'le the foot uponthe lower end of theplunger at right anglesthereto so that when the car P jumps the track said toot will encounter the rail-to cause the upward movement-of the plunger within thefhousin g shortly to be described.

'9 is normally slightly above the rail 13 and 5 for a purpose The upper end of this plunger!) is prefers V ably formed" with a threaded extension 13- onto which is threaded the lower end'of a metallic hub l i-arranged within the upper end of the housing bore 5 for normally maintaining the upper end ofthe bore closcd, but

to. permit the lubricant to' be deposited therein when the cap is removed; 7 v

I One section 6 of the housing 5 is formed adjacent its upper end with a hollow 'cir+ cular en'lergement 15,that cooperates with an arcnate depression 16 ntthe innerface ot'th'e other housing section ;6.to provide a casing- 17 for a rounded valve core 18, 'see Fig; 4. This core is arranged-upon a valve stem 19 that is equipped with a small rack 5 gear 20 directlyin front of a plunger 9 movable within the housing 5, the upper end of the plunger being provided with rack teeth 521 having mesh with the teeth of said rack gear, asclearly indicated in Fig; 3.

Leading into an opemng in the upper end "of the forward section 6 of the plunger thevcar jump the 't-izaelr.

gitudinally extending ratchet teeth housing; 5 is a nipple 221that has communication with thetrain 11116 C of the airbrake mechanism, by reason of a flexible .llO-SQ The valve casing forming portion 15 of the opposite housing section 6 is formed with an air exhaust nipple 2a which nipple is placed in communication with the train line C when the valve core 18 is rotated in a eounte1.'-elocl-:wise direction by the ;u pward movement of the plunger 9 when the switch 10 of the same engages the rail 13 should This will obviously .bleed the auxiliary reservoir D of the car brake mechanism resulting in the applicationottliebralce.

To maintain the plunger 9 in upwardly directed position to prevent the elosing of the valve the plunger-9 is formed with lon- '25, while the adjacent section {tot the plunger housing 5 is equipped with a spring pressed dog 26 for engagement with said teeth, see

This dogis formed with a pin QT -that extends through an opening oiiltwardly, in

:the housing section, so that the .sau'ie may be swun out of en asement w ith the ratchet i")v 7 t3 .1

.teeth,-to permit the loweringot the plunger.

1 It willthus be seen that I have provided ah hly novel, simpleand elliciently operating automatic-bleeding deviceglor the train lines of air brake mechanisms installed and associated with train cars that is well adapted 'foralloff the purposes heretofore designed,

1 and even though I have :herein shown and V vdescrihedthe invention aseonsistinp; of cer-' tam. detail structural elements, it isneverthe- 1 less to be.understood/that some changes may be made-therein without, alfectiny the spirit and scope of the appended,claims.

' Having thus described .myin'vention, what I claim as new 1s2- V 7 =1. In-an automaticgbleedlng device for-the .air brake system of atrain of cars,.a housing constructed of a pazr of elongated plates,

one of said plates-adapted for attachmentrto a car,- said platesbeing -formed with inlet and outlet openings in communication with} the air-brake system, a valve memher operable within ,sa d housing for ClOSlDI saidv inlet andvoutlet opening, a plunger slidable lietweenthe said plates,the upper-1 end por- "tion ofsaid plungerbeing associated with the ]valve in a manner whereby the same will actuate thevalve when moved inwardlyvwithin the housing.

housing constructed of a pair @ecured together, the upper" end the lower-end otthe hou 5;

In vanautomatic bleeding device'for the airibr k sys emof a trainer CarS al O' Q; eonstr eted of a-p'air of elongated plates, one

of said plates adapted for attachment to a car. said plates be ng stormed with inlet and outl t ,QpQn

within said housing for closing said inlet and outlet opening, a plunger shdable between the SillCl-PlltQS, the upper end por-' tion of said plunger being assooiatedwith the valve in a manner whereby the same ,will actuatev the valve when moved lnwardly within the housing, and means for retaining said plunger in a retracted position within the housing;

3. Inan 1 automatic bleeding device for the air brake system of ,a tra n otears, a of plates said plates being provided with'la valve casing, the complementary rvlate be ng (cured to the ear, a' va1 ve member operable es in emmunisation wi the v .aju' nra'ke system, a valve member operable of one of within said casing and projecting between the plates, a plunger s l idab le between the plates, cooperative means 'betweenthe valve and the plungergwherebyrthe valve will be actuated for releasing "the air in-the brake system, the lower end of said plunger adaptedfto depend. below the loweriyend of the housing, and means for retaining the plunger' in a retracted position after having been moved within the housing.

4. In an automatic bleeding; levice for the airbrake system of atrain of cars, a'housing constructed of a pair of plates-secured tow th a al el a iils, the mlslidable between the plates, .cooperative means between the valve and the plunger, whereby the valve willbeactuated for releasing the air in the brake systennthe lower end of said plunger adapted t o depend below meanslfor reacted position raining the plunger inn-re after havingbeen movedwithin thehousing, sa d means cons;sting p in forming the plunger with a rack of teeth, and apawl ari-an edWithin said housing'for engagement .with therack for retannng the plunger in a retracted position.

In, testimony whereof I afiix my. signature. V

WIL IE 'DISHO'N- 

